25281822720 has 576 divisors, whose sum is σ = 101468215296. Its totient is φ = 5221908480.

The previous prime is 25281822691. The next prime is 25281822749. The reversal of 25281822720 is 2722818252.

It is an interprime number because it is at equal distance from previous prime (25281822691) and next prime (25281822749).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151388077 + ... + 151388243.

It is an arithmetic number, because the mean of its divisors is an integer number (176160096).

Almost surely, 2^25281822720 is an apocalyptic number.

25281822720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25281822720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50734107648).

25281822720 is an abundant number, since it is smaller than the sum of its proper divisors (76186392576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25281822720 is an equidigital number, since it uses as much as digits as its factorization.

25281822720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 39.

The spelling of 25281822720 in words is "twenty-five billion, two hundred eighty-one million, eight hundred twenty-two thousand, seven hundred twenty".